- Section A: Count Groups of 11-20 Objects
- 1.3: Introduce Number Race, 11–20

- Warm-up: Number Talk: Add and Subtract 0 and 1
- 2.3: Centers: Choice Time

- Warm-up: Notice and Wonder: Pile of Connecting Cubes
- 3.2: Count Carefully with Friends
- 3.3: Introduce Find the Pair, Make 5

- Warm-up: Notice and Wonder: Lots of Dots
- 4.2: Count, Rearrange, Recount
- 4.3: Introduce Tower Build, Count and Build to 20
- Section A Summary
- Section A Practice Problems

- Section B: 10 Ones and Some More
- Warm-up: Estimation Exploration: Connecting Cubes
- 5.1: How Many Fingers?
- 5.2: How Many Dots in 10-frames?
- 5.3: Introduce Grab and Count, Pattern Blocks

- Warm-up: How Many Do You See: 5 and Some More
- 6.2: Fingers to 10-frames
- 6.3: Revisit Number Race, Numbers 11–20

- 7.2: Add More Counters
- 7.3: Centers: Choice Time

- Warm-up: How Many Do You See: Numbers on a 10-frame
- 8.2: Make Each Number

- 9.2: Equations and 10-frames
- 9.3: Introduce Make or Break Apart Numbers, Numbers 11–19

- Warm-up: What do you know about 15?
- 10.1: What Is Missing?
- 10.2: Make the Equations True
- 10.3: Centers: Choice Time
- Section B Summary
- Section B Practice Problems

- Section C: Count Groups of 11–20 Images
- 11.1: Find 10 Ones to Count
- 11.2: Color to Match Expressions
- 11.3: Centers: Choice Time

- Warm-up: Which One Doesn’t Belong: Tons of Tens
- 12.1: Count Images in Organized Arrangements
- 12.2: Count in Circles
- 12.3: Introduce Find the Pair, Make 10
- Section C Summary

- Warm-up: How Many Do You See: Fingerprints or Animals?
- 13.1: Fingerprint Zoo Book Pages
- Section C Practice Problems

- Glossary
- Image Attributions

- Notes
- Notes